Effect of Grating Parameters on Mode-Locked External Cavity Lasers

Dogru, Nuran

doi:10.1109/jstqe.2008.2010512

Cited by 8 publications

(20 citation statements)

References 17 publications

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“…Any further increase in repetition frequency resulted in a broader spectrum and a reduction in the wavelength shift. A similar red-shift in central wavelength was also observed in [13,17,18] suggesting that when the ICMF was changed, the device self-tuned its operating wavelength in order to maintain the correct effective cavity length needed to maintain resonance with the drive current signal. The stability of the mode-locking mechanism depends on the reflectivity of the FBG.…”

Section: Resultssupporting

confidence: 53%

Generation of mode-locked optical pulses at 1035 nm from a fiber Bragg grating stabilized semiconductor laser diode

Teh¹,

Alam²,

Shepherd³

et al. 2014

Opt. Express

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Abstract:We report the generation of transform-limited, ~18 ps optical pulses from a fiber Bragg grating (FBG) stabilized semiconductor laser diode. Up to 7.2 pJ of pulse energy and a peak power of 400mW were achieved when operating at a repetition frequency of 832.6 MHz, a multiple of the cavity (diode + FBG) free spectral range (FSR). A small detuning in the repetition frequency resulted in broader optical pulses. We have shown experimentally the transition from a gain-switched regime of operation to mode-locked operation once the injection current modulation frequency is set to match a harmonic of the cavity FSR. The transition also results in a reduction in the timing jitter of the optical pulses. Sergent, K. W. Wecht, and P. F. Sciortino, Jr., "Mode-locked hybrid soliton pulse source with extremely wide operating frequency range," IEEE Photonics Technology Letters 5(1), 28-31 (1993 245-247 (2000). 15. D. Linde, "Characterization of the noise in continuously operating mode-locked lasers," Appl. Phys. B 39(4), 201-217 (1986). 16. K. T. Vu, A. Malinowski, M. A. F. Roelens, M. Ibsen, P. Petropoulos, and D. J. Richardson, "Full characterization of low-power picosecond pulses from a gain-switched diode laser using electrooptic modulation-based linear FROG," IEEE Photonics Technology Letters 20(7), 505-507 (2008). 17. A. J. Lowery, N. Onodera, and R. Tucker, "Stability and spectral behavior of grating-controlled actively modelocked lasers

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Section: Resultssupporting

confidence: 53%

Generation of mode-locked optical pulses at 1035 nm from a fiber Bragg grating stabilized semiconductor laser diode

Teh¹,

Alam²,

Shepherd³

et al. 2014

Opt. Express

View full text Add to dashboard Cite

show abstract

“…These results showed that extreme increases in mode-locking frequency range (1.6 GHz) are obtained for a linearly chirped tanh apodized FBG [10,12] while transformed limited pulses are generated over a repetition frequency range of 850 MHz (2.1 − 2.95 GHz) using a linearly chirped Gaussian apodized FBG [13]. Therefore, the picosecond pulse width and the wavelength tuning capability make this model a candidate source for multiwavelength OTDM communications systems [10]. However, recently, many new profiles and structures of fiber gratings have been proposed and demonstrated to achieve wider bandwidth and high bandwidth utilization in dispersion compensators [14,15] and bandpass filters [16][17][18].…”

Section: Introductionmentioning

confidence: 82%

“…Although the geometry is similar to one reported in Refs. [9][10][11][12][13], here the refractive index changes sinusoidally along its z axis.…”

Section: Theoretical Modelmentioning

confidence: 99%

“…The use of chirped FBGs to compensate for the dispersion of fiber links [9] is a well-known approach. The author has previously reported [10][11][12] the mode-locking frequency range of an HSPS utilizing linearly chirped FBG. These results showed that extreme increases in mode-locking frequency range (1.6 GHz) are obtained for a linearly chirped tanh apodized FBG [10,12] while transformed limited pulses are generated over a repetition frequency range of 850 MHz (2.1 − 2.95 GHz) using a linearly chirped Gaussian apodized FBG [13].…”

Section: Introductionmentioning

confidence: 99%

“…The author has previously reported [10][11][12] the mode-locking frequency range of an HSPS utilizing linearly chirped FBG. These results showed that extreme increases in mode-locking frequency range (1.6 GHz) are obtained for a linearly chirped tanh apodized FBG [10,12] while transformed limited pulses are generated over a repetition frequency range of 850 MHz (2.1 − 2.95 GHz) using a linearly chirped Gaussian apodized FBG [13]. Therefore, the picosecond pulse width and the wavelength tuning capability make this model a candidate source for multiwavelength OTDM communications systems [10].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sinusoidally chirped fiber Bragg grating for mode-locked application

Dogru¹

2011

J. Opt. Soc. Am. B

Self Cite

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In this study, a mode-locked hybrid soliton pulse source (HSPS) utilizing sinusoidal chirped fiber Bragg grating (FBG) is reported for the first time, using the time-domain solution of coupled wave equations and rate equations. The sinusoidal chirped FBG provides a wider bandwidth by adjusting the reversion coefficient or chirp rate even if the FBG length is short. Numerical results also indicate that an HSPS-utilized sinusoidal chirped FBG produces shorter pulses in the 25 − 72 ps range, whereas the pulses range from 31 to 97 ps for a linearly chirped tanh apodized grating, and from 30 to 80 ps for a linearly chirped Gaussian apodized grating, along with an increase in the modelocking frequency range.

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Characterization of small-signal intensity modulation of single-mode fiber grating Fabry-Perot laser source

Hisham

Abas

Mahdiraji

et al. 2012

OPT REV

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A comprehensive study on the small-signal intensity modulation (IM) characteristics of a fiber grating Fabry-Perot (FGFP) laser is numerically investigated. The effect of external optical feedback (OFB), temperature, injection current, cavity volume, nonlinear gain compression factor, and fiber grating (FG) parameters on IM characteristics are presented. The temperature dependence (TD) of IM is calculated according to the TD of laser cavity parameters instead of using the well-known Parkove relationship. It has been shown that the optimum external fiber length (L ext ) is 3.1 cm. The optimum range of working temperature for FGFP laser is between 23 to 27 C. We also show that by increasing the laser injection current from 10 to 60 mA, the IM peak amplitude decreased from 6.3 to 0.2 dB and the relaxationoscillation frequency (ROF) is shifted from 1.2 GHz towards higher frequency of 5.48 GHz. In addition, the AR coating reflectivity and gain compression factor have no significant effect on the IM. The study indicates that a stable operation and excellent modulation characteristic can be obtained after optimization process.

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Effect of Grating Parameters on Mode-Locked External Cavity Lasers

Cited by 8 publications

References 17 publications

Generation of mode-locked optical pulses at 1035 nm from a fiber Bragg grating stabilized semiconductor laser diode

Generation of mode-locked optical pulses at 1035 nm from a fiber Bragg grating stabilized semiconductor laser diode

Sinusoidally chirped fiber Bragg grating for mode-locked application

Characterization of small-signal intensity modulation of single-mode fiber grating Fabry-Perot laser source

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